rcu-tasks: Create struct to hold state information

This commit creates an rcu_tasks struct to hold state information for
RCU Tasks.  This is a preparation commit for adding additional flavors
of Tasks RCU, each of which would have its own rcu_tasks struct.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2020-03-02 15:16:57 -08:00
commit 07e105158d